<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>纯CSS实现可编辑文字霓虹灯闪烁效果</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: arial;
        }
        body {
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            background-color: #07252d;
        }
        h1 {
            position: relative;
            letter-spacing: 15px;
            text-transform: uppercase;
            text-align: center;
            color: #0e3742;
            line-height: 0.7em;
            outline: none;
            -webkit-box-reflect: below 1px linear-gradient(transparent, #0008);
            animation: animate 3s linear infinite;
        }
        @keyframes animate {
            0%, 100% {
                color: #0e3742;
            }
            50% {
                color: #fff;
                text-shadow: 0 0 10px #03bcf4;
            }
        }
    </style>
</head>
<body>
    <h1 contenteditable="true">hello world</h1>
</body>
</html>
